ChainCatcher report: Base officially released an analysis report on the blockchain production outage, revealing that the Base mainnet experienced two separate block production interruptions on June 25 and 26, lasting 116 minutes and 20 minutes respectively. Chain assets remained secure, with funds always safeguarded. The root cause was a logic vulnerability in the sequencer’s block construction process: after a transaction execution failed, the previous journal state was not properly cleared, leading to incorrect gas calculations during subsequent valid transaction executions and resulting in invalid state transition blocks that caused the entire L2 chain to halt block production. Base has since resolved the issue with a patch and plans to strengthen its protocol fuzzing and stress testing systems to identify potential malicious transaction pathways, while also optimizing monitoring and operational procedures. Additionally, recovery mechanisms will be introduced to enhance rapid restoration capabilities in future similar incidents.
Base Reports Block Production Outage Caused by Sequencer Bug
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Summary
Base shares on-chain news regarding a recent block production outage. The Base mainnet experienced two interruptions on June 25 and 26, lasting 116 and 20 minutes, respectively. A bug in the sequencer’s block-building logic caused invalid state transitions, halting L2 block production. Base has deployed a patch and will enhance fuzz testing, stress testing, and monitoring. A recovery mechanism is also under development to accelerate future incident responses. The protocol update aims to prevent similar issues.
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